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Finding the Fourth Proportional to 421,750.70, 631,704.45 and 327,517.10

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Solution

The fourth proportional to 421,750.70, 631,704.45 and 327,517.10 is: 490,559.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    421,750.70 : 631,704.45 = 327,517.10 : x
  2. Step 2: Convert to fraction form
    421,750.70/631,704.45 = 327,517.10/x
  3. Step 3: Cross multiply
    421,750.70x = 631,704.45 × 327,517.10
  4. Step 4: Simplify right side
    421,750.70x = 206,894,009,521.10
  5. Step 5: Solve for x
    x = 206,894,009,521.10/421,750.70
  6. Step 6: Final answer
    x = 490,559.97

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.